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Toxiclionella
''Toxiclionella'' is a genus of sea snails, marine gastropod mollusks in the family Clavatulidae. The species in this genus were split off from the genus ''Clavatula'' by Powell in 1966 because of the toxoglossate dentition in the radula of the type species ''Clavatula tumida''. Species Species within the genus ''Toxiclionella'' include: * '' Toxiclionella haliplex'' (Bartsch, 1915) * '' Toxiclionella impages'' (Adams & Reeve, 1848) * '' Toxiclionella tumida'' (Sowerby II, 1870) ;Species brought into synonymy: * ''Toxiclionella elstoni'' (Barnard, 1962): synonym of ''Caliendrula elstoni ''Caliendrula elstoni'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae Clavatulidae is a taxonomic family of sea snails, marine gastropod mollusks in the superfamily Conoidea. The family is not well differ ...'' (Barnard, 1962) References {{clavatulidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toxiclionella Impages
''Toxiclionella impages'' is a species of sea snail, a marine gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ... mollusk in the family Clavatulidae. Description The shell grows to a length of 50 mm. The shell is flexuously, narrowly ribbed or plicate. The plicae extend to the suture, but not prominent. The color of the shell is yellowish brown. George Washington Tryon, Manual of Conchology vol. VI, p. 184; 1884 (described as'' Drillia impages'') Distribution This marine species occurs off the Agulhas Bank, South Africa. References * Kilburn, R.N. (1985). ''Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique''. Part 2. Subfamily Clavatulinae. Ann. Natal Mus. 26(2), 417–470. External links * {{DEFAULTSORT:Toxiclionella Impages Endemic mol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toxiclionella Haliplex
''Toxiclionella haliplex'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The shell grows to a length of 40 mm. (Original description) The robust shell is fusiform. The whorls slope from the summit and the periphery to a depressed line midway between the sutures. The portion posterior to the median line is smooth excepting the strongly retractive lines of growth and spiral striations. The portion anterior to it is marked by distant, low, broad, feebly developed axial ribs, which appear as nodules above the sulcus. On this part the incremental lines are decidedly protractive. The sutures are well marked. The posterior portion of base is well rounded, anterior part is produced rendering the left outline of the whorl concave, marked by feeble extensions of the ribs which disappear shortly after passing over the periphery. The entire surface of the spire and base are marked by very fine, closely spaced wavy spiral striations. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toxiclionella Tumida
''Toxiclionella tumida'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The shell grows to a length of 60 mm. The thick shell is subfusiform. The ground color of the shell is light green, with a reddish tone between the arcuate, opisthocline ribs and with a thick, olive-brown periostracum. The acuminate, orthoconic spire ends abruptly in a large blunt protoconch. The whorls are slightly convex. The outer lip shows a thick callus and parietal tubercle. The anal sinus in this species is very wide and rather shallow. The pear-shaped aperture is relatively large. The broad siphonal canal is unnotched and of moderate length. The subsutural cord is strong and more tumid than in ''Toxiclionella haliplex ''Toxiclionella haliplex'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The shell grows to a length of 40 mm. (Original description) The robust shell is fusiform. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clavatula
''Clavatula'' is a genus of sea snails, marine gastropod mollusks in the family Clavatulidae. Description In this genus, the shell is fusiform, with a well-produced spire. The whorls are coronated with tubercles or short spines at the suture;. The aperture is oval. The columellar lip is smooth, arcuate, and callous behind. The outer lip is thin and arcuated, with the anal sinus situated below the sutural coronal. The operculum is semioval with its nucleus about the middle, on the inner side. The foot is large, short and obtuse behind. The eyes are placed externally near the extremity of the tentacles. The radula contains a small unicuspid central tooth with single sharp laterals (formula :1-1-1). The species mostly inhabits the west coast of Africa. Species Species within the genus ''Clavatula'' include: * '' Clavatula ahuiri'' Cossignani & Ardovini, 2014 * †'' Clavatula aralica'' (Luković, 1924) (an extinct species from the Eocene in western Kazakhstan (Tshegan Formatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caliendrula Elstoni
''Caliendrula elstoni'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae Clavatulidae is a taxonomic family of sea snails, marine gastropod mollusks in the superfamily Conoidea. The family is not well differentiated morphologically. Clavatulidae was raised, based on cladistic analysis, from subfamily to the family ....Bouchet, P. (2015). Caliendrula elstoni (Barnard, 1962). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=834053 on 2015-02-19 Description The shell grows to a length of 35 mm. Distribution This marine species occurs off Transkei & KwaZulu-Natal, South Africa. References * Kilburn, R.N. (1985). ''Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 2. Subfamily Clavatulinae''. Ann. Natal Mus. 26(2), 417–470 External links * Endemic fauna of South Africa elstoni Gastropods described in 1962 {{clavatulidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clavatulidae
Clavatulidae is a taxonomic family of sea snails, marine gastropod mollusks in the superfamily Conoidea. The family is not well differentiated morphologically. Clavatulidae was raised, based on cladistic analysis, from subfamily to the family level by Rosenberg in 1998. It is no longer regarded as a subfamily of Turridae by several malacologists (Kantor, Sysoev).World Register of Marine Species: Clavatulidae accessed 1 April 2010. This family has no subfamilies. General characteristics This family consists of species with a medium-sized to rather large, fusiform shell. The oblong, pointed spire is rather high. The[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the absence of a visible shell. Definition Determining whether some gastropods should be called sea snails is not always easy. Some species that live in brackish water (such as certain neritids) can be listed as either freshwater snails or marine snails, and some species that live at or just above the high tide level (for example species in the genus '' Truncatella'') are sometimes considered to be sea snails and sometimes listed as land snails. Anatomy Sea snails are a very large group of animals and a very diverse one. Most snails that live in salt water respire using a gill or gills; a few species, though, have a lung, are intertidal, and are active only at low tide when they can move around in the air. These air-breathing species includ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs. The class Gastropoda contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian. , 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding, and re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Molluscan Studies
The ''Journal of Molluscan Studies'' is the peer-reviewed scientific journal of the Malacological Society of London, covering research in malacology.About the journal accessed 6 December 2010. Previous names of this journal include ''Proceedings of the Malacological Society'', and ''Proceedings of the Malacological Society of London'' (abbreviated as ''Proc. Malacol. Soc. Lond.''). Abstracting and indexing The journal is abstracted and indexed by ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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